| Autor: |
Jose Bauer, Ruan Pinto Mendes, Rayssa Cavaleiro de Macedo, Edilausson Moreno Carvalho, Leonardo Lopes, Renata Grazziotin-Soares, Darlon Martins Lima, Barbara Costa Oliveira |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Materials; Volume 15; Issue 21; Pages: 7791 |
| ISSN: |
1996-1944 |
| DOI: |
10.3390/ma15217791 |
| Popis: |
Composite resins with low flowability are usually handled and manipulated before insertion into the tooth preparation with gloved hands and/or using an instrument covered with a little amount of adhesive to facilitate modeling. We investigated if the modeling techniques (combined or not) affected physicochemical and esthetic properties of a composite resin. Specimens were fabricated and divided into groups according to the handling/modeling technique: Gloved-hands (composite was hand-manipulated with powdered latex gloves); Adhesive (adhesive was used in between the composite layers); Gloved-hands + Adhesive; Control (no adhesive and no touch with gloved-hands). The highest values for flexural strength (MPa), modulus of elasticity (GPa), and fracture toughness (MPa.m0.5) were obtained for Adhesive and Gloved-hands + Adhesive (p < 0.05); the lowest values were obtained for Control and Gloved-hands (p < 0.05). The Control group had the highest sorption. The Gloved-hands (p < 0.05) group had the highest solubility. Adhesive and Gloved-hands + Adhesive had a similar solubility (p > 0.05). The Control group (p < 0.05) had the lowest solubility. There was no statistical interaction between translucency vs. handling/modeling techniques and color stability vs. handling/modeling techniques. Adhesive as a modeling liquid protected the composite against sorption and solubility (if powdered gloves were used) and improved its physical/mechanical properties. Translucency and color stability were not correlated with modeling techniques. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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